{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular*}{0.8\hsize}{@{\hskip\tabcolsep\extracolsep\fill}l*{1}{ccccc}}
\hline\hline
                    &        mean&          sd&         p25&         p50&         p75\\
\hline
(mean) nlpi         &     -2476.9&      1290.8&     -3363.7&     -3076.9&     -1930.8\\
\hline\hline
\end{tabular*}
}
